As a Lutheran pastor I came across this recommendation, while preparing for my Confirmation School teaching on Holy Spirit. I wanted some new food for thoughts, and oh boy: this book does deliver it!
It is an old book, published in 1953 and written by Danish Lutheran Pastor and theologian Regin Prenter, but having read it via archive.org I must heartily and honestly say: I've never read so good a book about Martin Luther's (or Lutheran) pneumatology.
Considering myself somewhat a veteran or an old hand, I learned a good deal. My pneumatological views got a lot of shaping and finetuning. This truly changed my views (or rather: organized them as a coherent whole), although I considered myself an expert.
Truly a gem - and I'd like to see it in Logos catalogue! 😊